REGX, REGY, REGZ... and a bit more. (HP35S)



#2

Hi, all;

I was trying some other things in the HP35S and I realized that REGX, REGY, etc. can be entered step by step ([RCL] R, [RCL] E, etc.) and work the same. IN fact, they are editable as any other valid equation sequence.

Well, this points to the fact that REGX, REGY and so are not actually functions, and that the HP35S SOLVE/EQN can be customized.

What other 'codes' might be valid?

And what is the chance that some of these 'internal codes' (if existing, no urban legend...) are found in a program and cause some unexpected behavior, like... an endless loop? If REGX, REGY and so are simply a sequence of characters that make sense, which others may exist that should be used in particular cases? I mean unsuspected sequences, like C,T, for example (found in John´s program), that would cause no harm when executed step-by-step ('running program' flag cleared) but would lock the calculator when in running mode?

Maybe there´s more to be inspected here... and HP might be of help if pointing some 'harm codes' out, if any.

Cheers.

Luiz (Brazil)


Edited: 16 Oct 2007, 12:08 a.m.


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP35s Program Four Slings Lift Calculation Jean-Marc Biram (Australia) 2 286 12-16-2013, 07:21 PM
Last Post: Jean-Marc Biram (Australia)
  HP35s Calculator Max Rope Tension Program Jean-Marc Biram (Australia) 10 533 12-12-2013, 12:03 AM
Last Post: Jean-Marc Biram (Australia)
  bit manips on WP 34S Kiyoshi Akima 8 367 10-06-2013, 06:25 AM
Last Post: Paul Dale
  Where to the 32-bit version of User Code Utiltiy for HP-41 ? Olivier (Wa) 2 172 09-26-2013, 01:55 AM
Last Post: Olivier (Wa)
  OT: Simulating a TI calculator with crazy 11-bit opcodes Egan Ford 8 373 08-13-2013, 12:06 AM
Last Post: Paul Dale
  WP-34S Overlay - making it a bit more permanent? Marcel Samek 1 144 07-05-2013, 09:02 PM
Last Post: htom trites jr
  Trouble entering a HP35s program line Arno 2 207 04-05-2013, 06:28 PM
Last Post: Arno
  HP35s scientific calculator GREG W THOMAS 4 268 03-22-2013, 06:49 AM
Last Post: Thomas Radtke
  HP35s "MEMORY CLEAR" flashes Mark Paris 1 163 08-31-2012, 07:35 PM
Last Post: Bart (UK)
  HP35S keyboard Nick R 8 359 08-01-2012, 01:27 PM
Last Post: Dave Shaffer (Arizona)

Forum Jump: